diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/Ia32/RdRand.S')
| -rw-r--r-- | MdePkg/Library/BaseLib/Ia32/RdRand.S | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/MdePkg/Library/BaseLib/Ia32/RdRand.S b/MdePkg/Library/BaseLib/Ia32/RdRand.S deleted file mode 100644 index 92048b32518f..000000000000 --- a/MdePkg/Library/BaseLib/Ia32/RdRand.S +++ /dev/null @@ -1,80 +0,0 @@ -#------------------------------------------------------------------------------ ; -# Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR> -# This program and the accompanying materials -# are licensed and made available under the terms and conditions of the BSD License -# which accompanies this distribution. The full text of the license may be found at -# http://opensource.org/licenses/bsd-license.php. -# -# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. -# -# Module Name: -# -# RdRand.S -# -# Abstract: -# -# Generates random number through CPU RdRand instruction under 32-bit platform. -# -# Notes: -# -#------------------------------------------------------------------------------ - -//------------------------------------------------------------------------------ -// Generates a 16 bit random number through RDRAND instruction. -// Return TRUE if Rand generated successfully, or FALSE if not. -// -// BOOLEAN EFIAPI InternalX86RdRand16 (UINT16 *Rand); -//------------------------------------------------------------------------------ -ASM_GLOBAL ASM_PFX(InternalX86RdRand16) -ASM_PFX(InternalX86RdRand16): - .byte 0x0f, 0xc7, 0xf0 // rdrand r16: "0f c7 /6 ModRM:r/m(w)" - jc rn16_ok // jmp if CF=1 - xor %eax, %eax // reg=0 if CF=0 - ret // return with failure status -rn16_ok: - mov 0x4(%esp), %edx - mov %ax, (%edx) - mov $0x1, %eax - ret - -//------------------------------------------------------------------------------ -// Generates a 32 bit random number through RDRAND instruction. -// Return TRUE if Rand generated successfully, or FALSE if not. -// -// BOOLEAN EFIAPI InternalX86RdRand32 (UINT32 *Rand); -//------------------------------------------------------------------------------ -ASM_GLOBAL ASM_PFX(InternalX86RdRand32) -ASM_PFX(InternalX86RdRand32): - .byte 0x0f, 0xc7, 0xf0 // rdrand r32: "0f c7 /6 ModRM:r/m(w)" - jc rn32_ok // jmp if CF=1 - xor %eax, %eax // reg=0 if CF=0 - ret // return with failure status -rn32_ok: - mov 0x4(%esp), %edx - mov %eax, (%edx) - mov $0x1, %eax - ret - -//------------------------------------------------------------------------------ -// Generates a 64 bit random number through RDRAND instruction. -// Return TRUE if Rand generated successfully, or FALSE if not. -// -// BOOLEAN EFIAPI InternalX86RdRand64 (UINT64 *Rand); -//------------------------------------------------------------------------------ -ASM_GLOBAL ASM_PFX(InternalX86RdRand64) -ASM_PFX(InternalX86RdRand64): - .byte 0x0f, 0xc7, 0xf0 // rdrand r32: "0f c7 /6 ModRM:r/m(w)" - jnc rn64_ret // jmp if CF=0 - mov 0x4(%esp), %edx - mov %eax, (%edx) - - .byte 0x0f, 0xc7, 0xf0 // generate another 32 bit RN - jnc rn64_ret // jmp if CF=0 - mov %eax, 0x4(%edx) - - mov $0x1, %eax - ret -rn64_ret: - xor %eax, %eax - ret // return with failure status |